Improvement in governors



WILLIAM BELLIS, OF RICHMOND,V INDIANA.

- Letters Patent No. 78,782, dated June 9, 1868.

IMPROVEMENT IN GOVERNORS.

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TO WHOM IT MAY CONCERN:

Be it known that I, WILLIAM B ELLIS, of Richmond, ViiayneV county,Indiana, have invented :a new and useful Improvement lin Steam-EngineGovernors; and I hereby declare the following to be a full, clear, andexact description thereof, reference being had to the accompanyingdrawings, making part of this'speciiication'.

The :first part of my invention relates to a form of governor-valve,which, in addition to the advantages of great compactness and mobility,possesses the faculty of closing automatically in the event of thesnapping or running oif of the governor-belt, or the sudden suspensionof governor-action from any other cause or accident.

The second part of my invention relates to a device for holding suchgovernor-valve open when the throttle is shut, so as to enable theengine to be started by the opening of said throttle.

Figure 1 is an axial section of a valve and its accessories embodying myinvention, the governor being at rest, the valve open, and the steamjust entering from the opened throttle.`

Figure '2 shows the same valve with the gravitating catch or tumblerreleased, and the valve under control of the governor. l i

Figure 3 shows the valve automatically closed in consequence of therunning off of the beltor other accident to the governor.

vThe valve-chamberAm'ay have the represented rectangular or otherexternal form, and has the customary inlet-neck, B, and'outlet-neck, C,whichnecks are separated by an S-formed diaphragm, DE F G H, of whichthe portions D, F, and Hform horizontal shelves, connected by verticalwalls E and Of these parts the shelves D and F are traversed bycircularports d andfof equal size.

My valve proper consists vof three precisely equal parallel' andequidistant disks, I J K, of which. the upper and lower disks I and Kare separated from the middle disk J the precise distance whichseparates the shelves D and F.

The disks are connected by wings, ribs, or bars, j k, which I prefer tomake flush with the peripheries of the disks, and of spiral form, asshown, in order that in the vertical oscillation of the valve it may beguided easily and truly with the openings ofY the seats, and that everypart of the seats may be equally subjected to wear.

L is thevalve-stem, which is connected to the governor-stem M by-swivelm.

N is an ordinary governor; of which O is the drving-shaft. Thestem-coupling m is slotted, as shown, to receive the lever I), which isfitted with an adjustable weight or counterpoise, p, and is fulcrumed at2g. This weighted lever may be used to give a variety of speeds totheengine, or'toadjust its velocity to a certain numA her ofrevolutions, but I also use it to sustain the valvcIJK in the openposition when the engine and governor are at rest. This is accomplishedin connection with a prop, gravitatingatch, or tumbler, R, which isweighted at r and pivotcd at 1" to a. sliding block, S, which isadjustable by set-screw s.

When the engine is to be'started, the valve I J K is held open by theweighted stop or prop B. being turned up lu rldcr the lever P. The stopR is held in position by the weight ofthe governor-balls and weightedlever I. The steam being applied, the governor beginsto operate, and assoon as it attains suifleent velocity, the balls rise and release thestop R, the weight on which immediately causes it to drop out of. theway, and leaves the governor and valve to operate in the usual manner.

It will be observed, by reference to the construction and arrangement ofthe valve and apertures I J K olf, that the ports are'closed both by theextreme extension and by the extreme contraction of the `governor-halls,so that the ports d f may be closed or partially soas may be required,to check the engine in the regular legitimate action of the governorwhile inmotiou, or the ports may bc suddenly and completely closed andthe engine stopped by the breaking or running off of the governor-belt.i

With this 4arrangement it is always necessary either to prop the lever Pin the manner described, or to elevate the same by hand before startingthe engine. I

4When the valve is closed by the-extreme extension of the balls, thedisks I J occupy the ports d f, and

prevent the passage of steam, and when it 'is closed by the extremecontraction of the balls, tbe disks J K occupy the ports d f, andequally prevent its passage.

Besides the feature of closing in either direction, the provision ofdouble ports andthe peculiar construction of the triple valve I JKwith-au lopen centre justifies the employment of a valve of smalldiameter` Thus, an

lordinary governor-valve of two inches in diameter has an area of 3.1416square inches. This -area can be obtained by the use of an inch and ahalf valve of my construction, the area of the two disks being 3.534,from which deduct .3 75for the bars or wings 'ij 7c, and an area of3.159 is Aleft for the passage of steam.

A small valve has less friction, and. as it requires less power tooperate it than a larger one, the governor is more sensitive and mobile.

My said valve further possesses the advantages of being completelysteam-balanced, whether open or shut,

and undr.every pressure of steam.

While preferring the spiral form of bars ij 7c, I reserve the right toconnect my disks I J K by means of' straight bars, or by radial wings,if desired, and while preferring that such bars be three in number, asleaving the' most open passage compatible with the proper action of thevalve, yet two ribs or more than three in number may be employed. i y

I claim herein as new, and of my invention- 1. The construction of thetriple-disk valve I J K j k, substantially as and for the purpose setforth.

2. The diaphragm D d E Ff G I'I, constructedv as described, whenarranged in relation vto the triple-disk valve I J K, substantially asand for the purpose specified.

3. The combination of the adjustable bracket S, Weighted prop or latch Rr, and weighted lever Pp, with tl1e'governor-valve I K and governor N,all constructed, arranged, and operating substantially as and forthepurpose described.

In testimony of which invention, l hereunto set my hand. v y

WILLIAM BELLIS.

Witnesses:

Gao. H. KNIGHT, BURTON Eems.

